PipeChecker vs Pipe Sizer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PipeChecker
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I needed a way to check my pipelines, merge requests, and issues in my organization's GitLab instance, but couldn't authenticate using a physical token on my iPhone. So I made PipeChecker. Utilizing their extensive API documentation your phone can now act like any other IDE and access the instance using your personal access token. By inputting the base URL and your personal access token you can conveniently check on your GitLab-hosted assets. Terms of use: https://www.pilkfam.com/lukepilkappsupport/lukepilkapps_eula
Pipe Sizer
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Pipe Sizer is an interactive log-log pipe sizing chart based on the Hazen-Williams equation, made for engineers and technicians who size water piping: plumbing, condenser water and chilled water systems. Tap the chart to read values instantly • Flow, friction loss and velocity on the nearest pipe size • Shows whether the point is inside the design zone (too slow, too fast, or over the friction limit) • Double-tap to fix a flow rate, then slide one finger to compare pipe sizes at that flow • Pinch with two fingers to zoom and pan Pipe catalogues • PVC to Thai standard TIS 17-2532 (classes 5, 8.5, 13.5) and PVC Sch40/80 (ASTM D1785) • PPR, HDPE (PN4–PN25), steel Sch40/60/80, GSP (BS 1387), CPVC and PB • Inside diameters are calculated from each standard's wall thickness Fits your project • Open system (C = 100) and closed system (C = 140), or enter your own C factor • ASHRAE STYLE and CARRIER STYLE (Carrier open-piping chart values for steel pipe) • Flow in gpm, L/min or m³/h; friction loss in m/100m, ft/100ft, Pa/m or kPa/m • Adjustable design zone: minimum and maximum velocity, small-pipe limit and maximum friction loss • Dark mode, automatic or by choice • Thai, English and more than 30 other languages Compressed air and steam (new in 1.4.0) • Compressed air: sizing chart by working pressure, separate main-header and branch limits; steel, galvanized, copper and PPR; L/s, m³/min, m³/h, CFM • Saturated steam: sizing chart by pressure, with saturation temperature and the heat carried; kg/h, lb/h, t/h • Darcy-Weisbach with the Colebrook friction factor, per ASHRAE Fundamentals Pipe insulation (new in 1.4.0) • Chilled water: anti-condensation thickness from water and air temperatures and humidity (ASHRAE dew point) • Steam: thickness that keeps the outer surface below a set limit, with the heat loss • Check an existing thickness · 7 insulation materials · jacket choice Works offline. No sign-up, no ads, no personal data collected. Developed by EZYHVAC Co., Ltd. in collaboration with University of Phayao. Note: results are estimates for preliminary design. Always check against the applicable standards and the pipe manufacturer's data.
Screenshots
Verdict
The clearest difference is price: PipeChecker at Free against Pipe Sizer's $2.99. Pipe Sizer's advantage is in-app purchases (none vs 2) and update cadence (every 5 days vs every 10 months). On ads, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
PipeChecker is free to download; Pipe Sizer costs $2.99 up front. PipeChecker sells 2 in-app purchases, starting at $0.99 per month. Pipe Sizer asks for nothing beyond the download.
PipeChecker ships an update every 10 months, Pipe Sizer every 5 days. The most recent releases landed on November 7, 2026 and November 1, 2026 respectively.
| Parameter | PipeChecker | Pipe Sizer |
|---|---|---|
| Price | Free — better | $2.99 |
| Update frequency | Every 10 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 17.6 | 16.4 — better |
| Further details — not scored | ||
| Size | 5 MB | 29 MB |
| Age rating | 4+ | 4+ |
| Developer | Luke Pilkington | ezyHVAC Co., Ltd. |
In-app purchases
PipeChecker
- Pro Monthly$0.991 Month
- Pro Annual$9.991 Year
Pipe Sizer
No in-app purchases





